Alternative to `Version` from `distutils`/`packaging`

[tony]

trafficstars

This is necessary in libtmux and tmuxp.

tmuxp uses this for tmux versions (via git and 3.0b, etc)

Needs to be flexible and ideally have no dependency

• [ ] LegacyVersion deprecation

  In packaging, LegacyVersion (the supercessor to LooseVersion) will be deprecated, we won't be able to support 2.4-openbsd (like what is seen on OpenBSD's tmux versions

    /home/t/work/python/libtmux/.venv/lib/python3.10/site-packages/packaging/version.py:127: 
      DeprecationWarning: Creating a LegacyVersion has been deprecated and will be removed in the next major release
      warnings.warn(
  
  -- Docs: https://docs.pytest.org/en/stable/warnings.html
  

• [ ] tmux versions

   To the above, consider subclassing `Version` for tmux versions to handle git builds, platform builds, etc. then keeping `Version` for supporting pypi releases
  

• [ ] Version Assure that libtmux.__version__ / tmuxp.__version__ supports git refs / local match groups